[Engine] lexia & PP2000 idle flow corrections, 1.6 hdi

[smutts]

Swapped out injector 3, with a  "56,000 mile" injector plus new Lucas nozzle.
Recoded with PP2000.
Misfire is now gone.
Lovely.

Anyway, my leery contempt for French software?
The idle fuelling corrections?
The only injector fuelling that changed is "number 2".
Gone from +2 to -1, with the others reflecting where they are in the pack.

4312,
2143,

Conclusion?

The idle fuelling cylinders are numbered the wrong way round.

Well done Peugeot.

   

[Sol]

Maybe the guy who wrote the software thought the cylinders are counted from crank pulley to gearbox, like normal cars and not the other way round, like PSA do.

French logic - chateau neuf du pap Rodney!!

[smutts]

Yup, as any fool knows, no.1 is the front, or crank pully end.
I know Citroen's Traction Avant & DS, & Renault's 4,5,6,8 & 16 used to put engines in back to front, in the 50's to 70's, which probably caused the confusion.

[smutts]

Well, finally got it figured out.
Disabling one injector at a time, (with everything turned off at the ignition!) by unplugging the injector
& putting the plug onto a spare coil of a spare knackered injector to hopefully keep the ECM drivers from frying.

Using Peugeot Planet 2000, v25.1, parameter measurements, fuel corrections..
Assuming the cylinder where the fuelling demand rises, to be the unplugged one.

The following are my results for which cylinders are which.
Why could it be difficult to work out what's going on?
Not even any sane firing order.
Therefore it is just to be cu^ti$h.

Normal 1, Peugeot 4, Flow Correction 3.
Normal 2, Peugeot 3, Flow Correction 2.
Normal 3, Peugeot 2, Flow Correction 4.
Normal 4, Peugeot 1, Flow Correction 1.

or

Flow Correction 1, Normal 4, Peugeot 1,
Flow Correction 2, Normal 2, Peugeot 3,
Flow Correction 3, Normal 1, Peugeot 4,
Flow Correction 4, Normal 3, Peugeot 2,


Would anyone want to sticky this?

[Sol]

Stickied mate. Good find, and that is messed up big time to have software so badly out on cylinder numbering.

[smutts]

To be fair, now I've put the table to flow correction order, it does work to French inside out firing order.
At least with Froggy cylinder numbering.
Little wonder many haven't had much luck using the fuel corrections for diagnosis.
Best of luck everybody.

[smutts]

I wonder how the Ford lot get on with this for the TDCi's?